The mother of a trainer killed by an orca at SeaWorld fears for trainers losing their jobs when the Shamu Show ends. ◂ San Diegos News Source - 10News, .br 40 year old, experienced trainer Dawn Brancheau was drowned and killed on Wednesday at Sea Worlds Shamu Stadium. Dawn Brancheau was married to a .br Officials have released recordings of the 911 calls made after veteran SeaWorld trainer Dawn Brancheau was pulled into the water by a killer whale.br br The California Coastal Commission approved a $100 million expansion of the tanks SeaWorld uses to hold killer whales in San Diego — but it banned breeding .